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US2571360A
Expired / Lapsed
US
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Electrical monitoring system
Assignee: Individual
•
Filing: 1950-02-06
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Granted: 1951-10-16
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Expires: 1970-02-06
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Hallerberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:28
CPC Classifications
B; B60; B60R; B60R16/00; B60R16/02; B60R16/023; B60R16/0231; B60R16/0232; B60T; B60T17/00; B60T17/18; B60T17/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2450450A
Cited
US2519368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |